What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
We are glad to help you change your username. However it looks like there is already an account with the username Linkmeinguides. If you want, you can provide us with another username that you would like to use and we will change it for you accordingly.
Unfortunately it is not possible to replace the "Powered by Jotform". The only option is to remove it entirely, and the only way to remove that is to upgrade your account to any of the paid plans. Please visit our pricing page if you want to upgrade https://www.jotform.com/pricing. You can follow this guide on How to Upgrade your Account.
Once you upgrade, you should be able to uncheck the JotForm footer in your account settings. Follow this link to view your settings: https://www.jotform.com/myaccount/settings then uncheck the Jotform Branding checkbox at the bottom of the page. This will get rid of the "Powered by JotForm" text in all of your forms.
If you need further assistance, please let us know.